Recent content by totomyl

sorry for the confusion, i meant that i already moved the 36 from the left side to the right side making it -36, however that is apparently not correct, as it is -36 from the left side to begin with then becomes positive on the right side. why is that?

Homework Statement A shell is fired from a cliff that is 36m above a horizontal plane. the muzzle speed of the shell is 80.0m/s and it is fired at an elevation of 25 degrees above the horizontal. a) show that thetime of flight is 7.84 seconds. Homework Equations dy = viy(t) + 0.5(a)(t2) The...

i see, thank you for the help i think i can work out the rest on my own now. this was very helpful and will be useful for future reference.

could i ask how you got the 120 when both of the normals meet? this is where my geometry skills come in i assume.

Homework Statement it is the third question: Attempt Here is my attempt at the question, i got up to the point where i need to find the angle of incidence from the prism to the air, but i don't know how to do that. The solution page says to use 60o minus the angle of refraction i just...

Can someone explain to me the relationships with this equation (and probably any other equation). For example i don't fully understand how the ΔX is inversely related to the d. I have an idea of how this is so, however i can't really picture it with numbers. If you could explain the...

thanks for your suggestions, i will surely use this information next time :D. i wish i chose a different topic, but i was one of the last to pick the topic from a list and this seemed pretty cool anyways. I think i will just put some visual problems that have to do with electricity or...

I need to find an equation that i can make a word problem out of. This has to be able to be used at the grade 11 level and it is for my Stse project. I tried looking in my textbook for problems to calculate something that has to do with magnetic levitation or electromagnetic but i have had no...

ok so i got .28s for the first part by using the (vf-vi)/a

ahh i understand the 3.6 now, so when i put it in the formula i got approx. 1.2s. however am i doing this wrong because SteamKing above^ said i can't just put it in the formula like that, so i am confused as to what to do, i tried looking in the textbook for an example like this but cannot find one.

I am confused, soo i drew it out and i have 3 points, the starting point (1) then the maximum point (2) and then the ending point (3), but i don't know what to do from here. all i think i know is that it starts accelerating negatively between 1 and 2 and then positively between 2 and 3?

wait why is the final 0? isn't the displacement of the person always 3.6 [up] ?, also to find total displacement it is final minus initial right?

Homework Statement A ball is thrown 2.8m/s vertically upward from a window that is 3.6m above the ground. calculate the amount of time the ball spends in the air. Homework Equations quadratic equation d = Vi(t) + 1/2(a)(t)2 The Attempt at a Solution d = Vi(t) + 1/2(a)(t)2 3.6m =2.8...

Hello Rafael! I think this is a cool forum website as well. Even though I am not as smart I think its fun to learn more with the help of so many people.

thank you, your answers have been very helpful and i am very grateful!